Hand stamp-machine.



F. WOLDON.

HAND STAMP MACHINE.

APPLICATION FILED MAR. 6. 1912.

Patented Aug. 3

2 SHEETSSHEET l- COLUMBIA PLANOGRAPH co., WASHINGTON, n. c.

F. WOLDON.

HAND STAMP MACHINE. APPLICATION FILED MAR. 6. 1912.

Atte M m w a 1 1 mg m/ Am COLUMBIA PLANOQRAPM C0.,WA5HXNGTON, n. c.

FFTCE,

FRANK WOLIDON, 0F BROOKLYN, NEW YUl'tK, ASSIGNOR'TO CUSHMAN & DENISON MANUFACTURING 00., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

HAND STAMP-MACHINE.

Specification of Letters Patent.

PatentedAug. 3, 1915.

Application filed March 6, 1912. Serial No. 681,995.

tion.

My present invention relates to a hand stamp machine andhas for its most important objects (1st) a novel construction of the means which supports the'idle pawl, numbering wheel pawl frame and them].- justing means thereof, (2d) a novel co nstruction oflinks for swinging the ink pad clear of the numbering wheels in the operation of the machine and" at the same tlme cooperating with the means for operatively supporting the idle pawl and numbering wheel pawl frame, etc, to retain said means in their proper assembled position, andv (3d) a shield for protecting the'user from contact with the numbering wheels on the open side of the machine when in up position, and the same combined with the locking means for locking the machine in its down position.

These and other'features and advantages of my improvements will be apparent to those skilled in the art from an understanding of the following description in connec tion with the drawings which purport to show only one of the specific embodiments which my invention is adapted to take.

In these drawings, Figure 1 is a front elevation of a machine within my invention, the upper portion of the stem being broken. off Fig. 2 is a vertical section partly in elevation on the .line 2-2 in Fig. 1 looking in the direction of the arrows; Fig.3 is a horizontal section on the line 3-3 in Fig. vl looking in the direction of the arrows; Fig.

1 is a face View of the outermost link of the link combination; Fig. 5 is a face view of the middle link of said combination, otherwise termed the pad frame link, and otherwise defined, said figure is an end View of the frame which supports the inking pad; Fig. 6 is a face view'of the innermost link of the link combination which supports one side of the axle and shelf means,'which latter in turn operatively support the idle pawl and numbering wheel pawl frame and their adjusting means; Fig. 7 is a view similar to Fig. 2 except that additionally it shows the upper end of the stem of the machine together with its supporting knob 01' handle, bllij'CilffGlS from Fig. 2 in showing the machlne parts in their nearly down position;

, Figs. 8, 9-and '10 are detail views on an enlarged scale of certain of the parts shown in the previous figures, Fig. 8 being a vertical section partly in elevation on the line 88 in Fig. 9'looking in the direction of the arrows, Fig. 9 being a horizontal section partly in plan, and Fig. 10 being a vertical section partly in elevation on the line 1010 in Fig. 9 looking in the direction of the arrows.-

I' will now describe the devices of the drawings, reserving it to the claims to point out the novel features and to-define the scope-of the invention, it'being understood that'th'e claims will be given the due range of equivalents to which they may be entitled in view of the art.

The U-shaped main frame of the machine has parallel vertical legs 1 having internal vertical grooves 2. Thecross-piece 3 of the lJ-shaped frame has a central hole through it and supports a sleeve 4 whose bore is concentric with said hole. 6 is the stem of the machine working in the sleeve 4 and has an operating knob '7 on its upper end. 8 is a compression spiral spring on the stem 6 between the cross-piece 3 and the knob 7.

9 is the U shaped numbering wheel frame depending by its cross-piece from the lower end of the stem 6 with its legs adjacentthe legs 1 of the previously described U-shaped main" frame. The usual numbering wheels 11 andidle wheels 12 are rotatably supported as usual on a stationary drum (not shown) supported between the legs of the numbering'wheel frame. 1010 are pins which project outwardly from the legs constituting the ends of the numbering wheel frame 9 sufficiently to form the pivots for links 14 hereinafter described. 1515 are pins projecting from the ends of the numbering wheel frame above the pins 10. These pins 15 slide in the grooves 2 in the legs 1 of the main frame, and guide the vertical reciprocations of the numbering wheel. frame in the main frame.

14.14 are quadrant shaped links, one ad- ]acent each end of the numbering wheel frame 9. Each link has a hole 10 (compare Fig. 6) in its right angled corner, by which the link'pivots on one of the pins 10. The links 14 together support the axle 16 from which the numbering wheel pawl frame 17 (Figs. 1 and 9) pivotally depends. For this purpose, said links have holes 18 at their lower quadrant corners to receive the ends of said axle 16. The same links 14 also support a shelf 19 (Figs. 1, 8 and 9) in front of the axle 16. For this purpose the shelf has at each end a round pin projection 20 (Fig. 9) and a fiat projection 21 fitting respectively a hole 20 and a notch 21 in each link 14. The right hand lug 17 in Fig. 1 (compare Fig. 9) by which. the numbering wheel pawl frame is pivotally suspended from the axle 16,is vertically slotted to receive a small flat member 22 (compare Fig. 10) having a hole which receives through it the axle 16 and having a notched end 23 which projects forward into a notch 24 in the edge of the shelf 19. This interlocking of these notches prevents the member 22 from moving along the axle 16, and therefore said member in turn prevents the num bering wheel pawl frame 17 from doing the same thing, which latter function is the real purpose of this member 22.

25 is the usual coiled spring on the axle 16 Whose ends engage the shelf 19 and the pawl frame 17 respectively to impel the latter against the numbering wheels.

26 is a finger piece on the right hand end of the pawl frame (Figs. 1, 8 and 9) for manually lifting or swinging the pawl frame away from the numbering wheels.

27-27 (Figs. 8 and 9) are notches in the edge of the shelf 19 corresponding with the respective idle wheels 12. The idle pawl 28 has a hole in its upper end receiving through it the axle 16 upon which it can pivot to and away from the idle wheels and along which it can slide.

30 is a pin projecting horizontally from the left hand end of the numbering wheel pawl frame slidable through a hole in the lower part of the idle pawl.

29 is a flange or feather on the upper end of the idle pawl receivable into any of the shelf notches 27 when the idle. pawl is car ried down into its operative position along with the number wheel pawl frame by the spring 25 as already described. As is well understood, this will give a certain printing effect to the machine, either successive, repeat, duplicate or triplicate, etc., depending upon the particular idle wheel 12 engaged by the idle pawl when its feather is in the given notch 27. To change this printing effect at will, namely, to adjust the idle pawl to engage any other idle wheel, the user of the machine swings the numbering wheel pawl frame (and the idle pawl which it carries) outwardly and upwardly by taking hold of the finger piece 26, whereupon the feather 29 lifts out of the notch 27 which it formerly engaged, permitting the operator to slide the idle pawl 28 along the axle 16 until its feather alines with the desired new shelf notch 27 whereupon he releases the finger piece 26 and the spring 25 asserts itself to carry the feather down into the notch desired and to carry the idle pawl into engagement with the desired idle wheel to give the desired new printing effect of the printing wheels. T

It will be noted that the ends of the axle 16 and the projections 20 and 21 on the shelf 19 are not riveted or upset or otherwise permanently secured in the corresponding holes and notches in the links 14. On the contrary, it is part of the cheapness of the above described construction thatthey are loosely connected, but the component parts are nevertheless kept together by the links or ends 34 of the pad frame 32 next to be described, which, in addition, also serve to operate the aforesaid links 14 to pivotally move them about the pins 10. When these links 14 are swung upwardly (compare Fig. 7) they carry the supported pawl frame and idle pawl idly over the faces of their respective wheels, but when swung downwardly, as in Fig. 2, said pawls engage the teeth of these wheels to rotate and operate them accordingly.

32 is a U-shaped member, conveniently called a pad frame because it supports the inking pad, whose parallel legs 34 nicely straddle the quadrant links 14 and the numbering wheel frame 9 when the former are pivotally supported, as already described, adjacent the ends of said frame. In the normal or up position of the machine, as in Figs. 1 and 2, these legs 34 extend upwardly from the cross-piece of the U, which crosspiece then underlies the numbering wheels supporting the usual inking'pad 33 in contact with said wheels. The legs 34 have longitudinal slots 35 receiving the previously described guide pins 15 that project from the numbering wheel frame 9 into the vertical grooves 2 in the legs of the main frame 1 (compare Fig. 1).

The quadrant links 14 have short pins 36 (Figs. 2, 6 and 7) surrounded by loose antifriction sleeves 37 which extend into these same slots 35 in the pad frame links 34, said pins being located above the pivots 10 of the links on the upper side of the cam recess 16 which, it will be remembered, receive the fixed guide pins'15 that project from the numbering wheel frame into the guide grooves of the main frame 1. The result is that as the slotted ends 34 of the pad frame 32 swing or fulcrum about the aforesaid guide pins 15, they also swing the quadrant links 14 about their pivots 10 by reason of the cam action of the sides of the slots 35 (in the ends 34 of the pad frame) against the above described pins 36 on the quadrant links. In short, the pivotal operation of the pad frame 32 correspondingly causes the which latter, it-will be remembered, carry with them the supported numbering wheel pawl frame and the idle pawl, etc.

It remains now to describe the'means which supportsand swings the pad frame 32' between its position shown in Figs. 1 or 2 and its position shown in Fig.7. Thismeans comprises the links 38', one next each end 34 :of'the pad frame so that these are the outermost links of the link combination, the ends 34 of the pad frame being the middle links of that combination, and the quadrantlinks 14 being the innermost linksz A face view of one of these links 34 is shownin- Fig. 4. Each has a curved slot39 through which projects the guide pin 15 at itsend of the machine, and said pin plays in this slot as the link pivots.v 40" (Fig. 4) is a pivot hole in each link 38 which receives into it the smooth end of a screw 40 that projects inwardly, one througheach leg 1 of the main frame and at one side thereof. Thus,

these links 38 pivotaboutmhese fixed pivots 40. Each of the links 38 has another pivot hole 41 at the opposite lower corner from the pivot hole 40 and'receives loosely in it the pivot pin 41 on the adj acentpad frame link 34 (Figs. 5, Qand 7).

This completes the description of the operative relations of the links. It now merely remains to pointout that as the stem 6 and the numbering. wheel frame 9 descend on the printing stroke, the. guide pins 15 press downwardly on the lower sides of the curved cam slots 39 in the links 38 and swing the latter downwardly around their fixed pivots 40, andthen outwardly as in Fig. 7, and by the pivotalconnections 41 these links 38 also swing. the pad frame 32 from the numbering wheelinking position in Fig. 2 to their IlOIl-inklllgilOOSitiOIl at one side of the wheels in Fig. 7, said pad frame meanwhile swinging the quadrant links 14 upwardly as heretofore described to position the pawls for operating the wheels on the next up stroke of the machine. This up stroke occurs as soon as the down pressure on the knob 7 is released and the spring 8 is allowed to expand, whereupon all of the links pivot in the reverse direction from those just described for. them respectively, and assume their normal position of rest in Figs. 1 and 2 for the up position of the machine. In accomplishing this return pivoting of the links, the guide pins 15 on their up stroke engage the upper ends of the curved slots 39 in the links 38 (see Fig.

7) and swing the slotted portion of said.

links upwardly around the fixed pivots 40. These links 38 in turn swing the pad frame 32 from its non-inking position into its inking position of Fig. 2 by reason of the pivotal connection 41 between the links and said frame. Finally, the pad frame in turn thepad-frame screw-connects with a stem onthe" inking pad 33, which stem in turn is received in a slot in the cross-piece of the pad frame and serves, when tightened, to hold the inking'pad permanently on the pad I frame or, when loosened, to permit the inking pad to be removed to have it replaced or reinked.

Itwill be observed that-the ends or links 34 of theink pad frame have projections 51 formedat one side (Figs. 5 and2) to overlap the holes-l8in the quadrant links 14, and thereby prevent the axle 16 (Fig. 9) from becoming'endwise displaced in either direction through said holes 18. This condition, which exists for the up stroke of the machine in Fig. 2, likewise continues for all other positions includingthe extreme downposition of the machine because, in the down movement, the pad frame links 34 swing so as to overlie more and more the mouths of these holes 18 in the links. In other words, the links or ends 34 of the pad frame serve both to hold the quadrant links 14 on their pivots 10 (which are the ends of the numbering wheel shaft or axle) and also hold these same links assembled in proper supporting relation to the axle 18 that supports the idle pawl and the numbering wheel pawl frame, and also to the shelf 19 (compare Fig. 9) without these parts being rigidly or permanently connected.

52 is a piece of thin sheet metal having a hole through which is received the stem 6, which piece of metal then extends downwardly over the rear side of the numbering wheel frame 9 and below is permanently attached thereto and forms a shield protecting the user from contact with the rear side of the numbering wheels. This is the ordinary shield found in hand stamp machines but it nevertheless leaves the front side of the numbering wheels exposed with the possibility of the user there contacting with their inked faces. Heretofore, this front side of the numbering wheel frame has not been protected with a shield because to do so would interfere with the up and down swinging of the pawl frame. However, I have made the improvement whereby the front side also of the numbering wheels is shielded from contact with the user or with papers or objects upon which the machine is laid, by providing a shield 53-supported from the cross-piece 3 of the main frame in position to overlie the front of the wheels supported round-sectioned rod extending when they are in their up position as in Figs. 1 and 2. This shield 53 of my invention accomplishes to all intents and purposes the full protection of the numbering wheels from external contact because, after all, it is only necessary to; protect said wheels when they are in their up position, since when they are down or when the machine isin the act of being operated, accidental contact with said wheels is not likely.

As a further feature I have made this protecting plate 53 an integral downward extension from the locking plate 54: which is pivotally held against the underside of the cross-piece 3 of the main frame by a screw 55, and which has a hole 56 (Fig. 3) through which projects the stem 6 of the machine, said plate having a finger piece 55 by whose manipulation the locking plate 54 may be operated to carry the edge of its opening 56 into a recess or notch 57 (Figs. 2, 3 and 7) in the side of the stem 6 to lock the stem against the action of the spring 8, with the numbering wheel frame in its down position so that the user can readily have access to the numbering wheels to clean them or to adjust them by hand to produce the desired printing combination from which to start What I claim is:

1. A hand stamp machine comprising the combination of a main frame, a printing wheel frame reciprocating between an up and a down position in the main frame,idle and printing wheels operatively supported in the printing wheel frame, idle and printing wheel pawl means, a pair of separate links pivoted one to each end of the printing wheel frame by a freely separable pin and hole connection, idle and printing wheel pawl-supporting and adjusting means sup ported between freely separable therewith, and a pivotally supported U- shaped ink-pad supporting-frame whose legs at all times straddle the printing wheel said pair of links with frame and are located outside the aforesaid ing wheel pawl means, a pair of links pivoted one to each end of theprintin'g wheel frame by a freely separable pin and hole connection, an idle and printing wheel pawlacross between said pair oflinks with its ends detachably received into holes through the links, and a a pivotally supported U shaped ink-pad supporting-frame whose legs at all times straddle the printing wheel pin and hole connectionsframe and the aforesaid adjacent links and retain them in'their aforesaid pivotal con-.

in the printing wheel frame, idle and printing wheel pawl means, a pair of links'pivoted one to each end of the printing wheel frame, idle and printing wheel pawl-supporting and adjusting means supported between and upon said pair of links with freely separable pin and hole connections and'mechanism other than'said links and their mountings for maintaining their connections.

4. A hand stamp machine comprising a main frame, a printing wheel frame reciprocating between an up and a down position in the main frame, idle and printing wheels operatively supported in the printing wheel frame, idle and printing wheel pawl means, a pair of links pivoted one'to each end of the printing wheel frame, an idle and print- 5 ing wheel pawl-supporting round-sectioned rod extending across between said pair of links with its ends detachably received into holes a through the'links, and a pivotally supported U-shaped ink-pad supportingframe whose legs straddle the printing wheel frame and the aforesaid adjacent links covering at all times the mouths-of the aforesaid holes in the links.

5. 'A hand stamp machine comprising the combination of a Ushaped main frame, whose legs have internal vertical guide grooves, a U-shaped printing wheel frame whose legs have guide pins working in the aforesaid grooves and guiding said frame in an up and down reciprocation in the main frame, idle and printing wheels operatively supported in the printing wheel frame, a pair of inner links one adjacent each end of the printing wheel frame and pivoted there to, idle and printing wheel pawl supporting-means extending across between said links, each of said inner links having a curved cam slot receiving through it the guide pin at its end of the printing wheel frame, and further having a pin on the opposite side of said slot from the pivot of the link; a pair of middle'links consisting of the legs of a U-shaped ink-pad supporting frame which straddle the printing wheel the middle links likewise swings the inner 1 llnks to operate the idle and printing wheel pawls which they support; and outer links one adjacent each middle link having pivotal connection with one corner thereof, and at its other corner having pivotal connection with the leg of the main frame of the machine, and each outer link further having a curved cam slot through which projects the guide pin on its side of the machine whereby, as said guide pins descend with the printing wheel frame on the down stroke of the machine, they engage the edge of said cam slots in the outer links causing said links to swing about their pivots on the legs of the main frame and to carry the middle links with them to swing the inkpad frame to one side of the printing wheel frame.

6. In a hand stamp machine, the combination with amain frame, of printing mechanism movably mounted therein and including printing wheels, a pair of spaced separable links mounted on the frame, wheel rotating means located between the links and having their ends detachably engaged therewith, and inking mechanism mounted on the frame and constituting the means for maintaining the connection between the wheel rotating means and the links.

7. In a hand stamp machine, the combination with a main frame, of printing mechanism mounted therein, and including rotary printing wheels, devices for rotating said wheels, a support for said devices movably mounted on the frame and including separable parts, and inking mechanism mounted on the main frame and constituting means for maintaining said parts in assembled relation.

In testimony whereof I afiix my signature in presence of two witnesses.

FRANK WOLDON.

Witnesses:

E. W. SOHERR, J12, ALAN C. MCDONNELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

